ocaml-autoconf Debian packaged

A while ago, me and Richard Jones have federated the various stubs for OCaml autoconf support in the ocaml-autoconf project.

Having almost forgot about that for a while, here at DebCamp9 I've just catched up and shipped it in Debian. Instead of creating a package of its own, which would have been ridicolously small, I've added the macros and their docs to ocaml-tools.

You can find ocaml.m4 and friends in that package, starting from version 20090719-1, which I've just uploaded to unstable.